Contents

 

                                                                                                                                                    Page

EXECUTIVE SUMMARY                                                                                                                 i

1         INTRODUCTION AND PROJECT INFORMATION                                                           1

1.1            Background.............................................................................................................. 1

1.2            Construction Programme and Activities.................................................................. 1

1.3            Project Organisation................................................................................................ 2

1.4            Purpose of the Report.............................................................................................. 2

2         SUMMARY OF EM&A REQUIREMENTS                                                                           3

2.1            Monitoring Requirements......................................................................................... 3

2.2            Environmental Mitigation Measures........................................................................ 3

3         SUMMARY OF EM&A Monitoring Data                                                                              3

3.1            Monitoring Data........................................................................................................ 3

3.2            Summary of Monitoring Exceedances.................................................................... 4

4         WASTE MANAGEMENT                                                                                                      5

5         ENVIRONMENTAL NON-CONFORMANCE                                                                       5

6         CONCLUSION, COMMENTS AND RECOMMENDATIONS                                             5

 

 

List of Tables

Table 1.1    Contact Information of Key Personnel

Table 2.1    Monitoring Parameter

Table 3.1    Summary of Monitoring Data in the Reporting Quarter

Table 3.2    Summary of Exceedance Events in the Reporting Quarter

 

 

List of Figures

Figure 1        Demarcation of Entrusted Portion of Widening of Tolo Highway/Fanling Highway between Island House Interchange and Fanling – Stage 2

Figure 2        Environmental Monitoring Locations

 

 

List of Appendices

Appendix A  Construction Programme

Appendix B  Project Organization Structure

Appendix C  Implementation Schedule of Environmental Mitigation Measures (EMIS)

Appendix D  Meteorological Data Extracted from Hong Kong Observatory

Appendix E  Environmental Monitoring Data for Air Quality and Noise

Appendix F  Waste Flow Table

Appendix G  Statistics on Complaints, Notifications of Summons and Successful Prosecutions

 

EXECUTIVE SUMMARY

This report documents the findings of EM&A works conducted in the quarter between 1 August November 2016 and 31 October January 20176.

 

The impact stage EM&A programme for the Project includes air quality and noise monitoring.

 

The EM&A programme was carried out by the ET in accordance with the EM&A Manual requirements.  It is concluded from the environmental monitoring and audit works that adequate environmental mitigation measures have been implemented by the civil works contractors where appropriate in the reporting quarter.

 

In the reporting quarter, no exceedance events were recordedone (1) exceedance of Action Level of Dissolved Oxygen was recorded for water quality monitoring at the monitoring location I5 on 12 December 2016. No necessary remedial actions have been taken.

 

No environmental non-compliance was recorded in the reporting quarter.  No environmental complaints were received in the reporting quarter.  No environmental related prosecution or notification of summons was received in the reporting quarter.

 

The box culvert works have been partially completed by the end of March 2014 except the last construction activity, installation of a base slab at Box Culvert ID4. Due to the loading requirement of a fresh water main under the box culvert, installation of the base slab at Box Culvert ID4  has been scheduled to be commenced in December 2016.

 

The construction works at the box culvert ID4 are temporarily suspended until the utilities diversion works complete.  The 4-week post construction water quality monitoring will be commenced after the installation of the base slab finishes, hence the completion of the box culvert works.

 

 

 

 

1                 INTRODUCTION AND PROJECT INFORMATION

1.1              Background

1.1.1          The Project is a Designated Project under the Environmental Impact Assessment Ordinance (EIAO) (Cap. 499).  An Environmental Impact Assessment (EIA) Report together with an Environmental Monitoring and Audit (EM&A) Manual were approved on 14 July 2000 (Register Number: EIA-043/2000).  The Project is governed by an Environmental Permit (EP) (EP-324/2008) which was granted on 23 December 2008.  A variation of EP (VEP) was applied and the VEP (EP-324/2008/A) was subsequently granted on 31 January 2012.  An additional VEP has been applied on 24 February 2014 and the VEP (EP-324/2008/B) was subsequently granted on 17 March 2014.  Furthermore, an additional VEP has been applied on 9 March 2015 and the VEP (EP-324/2008/C) was subsequently granted on 27 March 2015.  The current VEP (EP-324/2008/D) was granted on 27 August 2015.

1.1.2          Chun Wo Construction & Engineering Co Ltd (Chun Wo) was commissioned by the Civil Engineering and Development Department (CEDD) as the Civil Contractor for the Entrusted Portion of Widening of Tolo Highway/Fanling Highway between Island House Interchange and Fanling Stage 2.  Meinhardt Infrastructure & Environment Ltd (MIEL) has been appointed by Chun Wo as the Environmental Team (ET) to fulfill the corresponding EM&A requirements pursuant to Environmental Permit No. EP-324/2008/D in accordance with the Updated EM&A Manual (dated March 2015) for Widening of Tolo Highway/Fanling Highway between Island House Interchange and Fanling Stage 2.  The EM&A programme commenced in 5 November 2013.

1.1.3          Figure 1 shows the works areas for the Entrusted Portion of Widening of Tolo Highway/Fanling Highway between Island House Interchange and Fanling Stage 2.

1.2              Construction Programme and Activities

1.2.1          The construction programme is presented in Appendix A.  The major construction activities undertaken in the reporting quarter are summarized below:

·         Cable Detection and Trial Trenches;Cable Detection and Trial Trenches;

·         Demolition of Existing Vehicular Bridge;Installation of Stone Cladding; 

·         Footbridge Construction;Erection of Temporary support for demolition of J-bridge; 

·         Storm Drains Laying;Demolition of Existing Vehicular Bridge; 

·         Noise Barrier Construction;Footbridge Construction;

·         Pier / Pier Table Construction; Storm Drains Laying;

·         Pile Cap Works; Noise Barrier Construction;

·         Portal Beam Construction; Pier / Pier Table Construction;

·         Retaining Wall Construction; Pile Cap Works;

·         Road Works; Portal Beam Construction;

·         Sewer Works;Piling Works for Viaduct;

·         Utilities Duct Laying;Piling Works for Noise Barrier;

·         Viaduct Segment Erection; Retaining Wall Construction;

·         Water Main Laying;Pre-drilling Works and Works for Noise Barrier;

·         Extended Podium Construction;Road Works;

·         Construction of Remaining Base Slab of Box Culvert ID4;Sewer Works;

·         Abutment Construction;Slope Works;

·         Construction of Boundary Wall for DSD Pumping Station;Utilities Duct Laying;

·         Extended Podium Construction; andViaduct Segment Erection; and

·         Roundabout Modification Works.Water Main Laying.

1.3              Project Organisation

1.3.1          The project organization structure is shown in Appendix B.  The key personnel contact names and numbers for the Project, together with the general enquiry hotline, are summarised in Table 1.1Table 1.1.

Table 1.1     Contact Information of Key Personnel

Party

Role

Position

Name

Telephone

Fax

AECOM

Engineer’s Representative

Senior Resident Engineer

Mr. Alan Lee

2171 3303

2171 3498

Resident Engineer (Environmental)

Mr. Perry Yam

2171 3350

Mott MacDonald

Independent Environmental Checker (IEC)

IEC

Mr. Steven Tang

2828 5920

2827 1823

Chun Wo

Contractor

Site Agent

Mr. Daniel Ho

2638 6144

2638 7077

Environmental Officer

Mr. Victor Huang

2638 6181

Meinhardt

Environmental Team (ET)

ET Leader

Mr. Fredrick Leong

2859 1739

2540 1580

Enquiry Hotline

General Enquiry

--

Ms Helena Mak

6355 1731

--

 

1.4              Purpose of the Report

1.4.1          This is the Quarterly EM&A Report which summaries the impact monitoring results and audit findings for the Project during the reporting period between 1 August November 2016 and 31 October January 20167.

2                 SUMMARY OF EM&A REQUIREMENTS

2.1              Monitoring Requirements

2.1.1          In accordance with the Updated EM&A Manual, environmental parameters including Air Quality and Noise have been monitored.  The specific parameters, monitoring frequency and the respective Action and Limit Levels are given in Table 2.1Table 2.1 and the location of the monitoring station is shown in the Figure 2.

Table 2.1     Monitoring Parameter

Parameter

Unit

Action Level

Limit Level

Frequency

Air Quality

1-hour TSP

mg/m3

292.7

500

Three times every 6 days

24-hour TSP

mg/m3

170.3

260

Once every 6 days

Construction Noise

Leq 30min

dB(A)

When one documented valid complaint is received

75

Once every Week

 

Temporary Suspension of Box Culvert Works and Water Quality Monitoring

2.1.2          The box culvert works have been partially completed by the end of March 2014 except the last construction activity, installation of a base slab at Box Culvert ID4.  Due to the loading requirement of a fresh water main under the box culvert, installation of the base slab at Box Culvert ID4 has been scheduled to be commenced in December 2016.

2.1.3          The construction works at the box culvert ID4 are temporarily suspended until the utilities diversion works complete.  The 4-week post construction water quality monitoring will be commenced after the installation of the base slab finishes, hence the completion of the box culvert works.

2.2              Environmental Mitigation Measures

2.2.1          Environmental mitigation measures have been recommended in the EM&A Manual and are given in Appendix C.  The implementation status for the reporting quarter is also given in the Appendix.

3                 SUMMARY OF EM&A MONITORING DATA

3.1              Monitoring Data

3.1.1          Monitoring has been conducted in accordance with the specification in the EM&A Manual in the reporting quarter.  Meteorological data for the reporting quarter have been extracted from Hong Kong Observatory and are given in Appendix D.  Monitoring data with graphical presentation for the reporting quarter have been given in Appendix E.  A summary on the monitoring results has also been given in Table 3.1Table 3.1.

Table 3.1     Summary of Monitoring Data in the Reporting Quarter

Monitoring Location

Minimum

Maximum

Average

Air Quality

1 hour Total Suspended Particulate

SR77

58.983.1mg/m3

161.6199.7mg/m3

127.4153.5mg/m3

24 hour Total Suspended Particulate

SR77

41.847.6mg/m3

151.5137.5mg/m3

91.692.5mg/m3

Construction Noise

SR77

59.063.5dB(A)

68.568.0dB(A)

65.84dB(A)

Water Quality

Dissolved Oxygen

I5

6mg/L

11.5mg/L

8.7mg/L

Suspended Solid

I5

<2.5mg/L

16mg/L

5.7mg/L

Turbidity

I5

3.9NTU

29.7NTU

7.8NTU

 

3.2              Summary of Monitoring Exceedances

3.2.1          The number of exceedances event recorded in the reporting quarter is summarized in Table 3.2Table 3.2.

Table 3.2     Summary of Exceedance Events in the Reporting Quarter

Parameter

Criteria

Number of Exceedances Events

Number of Project Related Exceedance Events

Air Quality

1-hour Total Suspended Particulates

Action Level

0

0

Limit Level

0

0

24-hour Total Suspended Particulates

Action Level

0

0

Limit Level

0

0

Construction Noise

Leq 30min

Action Level

0

0

Limit Level

0

0

Water Quality

Dissolved Oxygen

Action Level

1

0

Limit Level

0

0

Suspended Solid

Action Level

0

0

Limit Level

0

0

Turbidity

Action Level

0

0

Limit Level

0

0

 

3.2.2          No exceedance of air monitoring was recorded at SR77 in the reporting quarter.

3.2.3          No exceedance of noise monitoring was recorded at SR77 in the reporting quarter.

3.2.4          One (1) exceedance of water quality monitoring was recorded at I5 in the reporting quarter.

3.2.5          The Contractor has been reminded to strengthen the mitigation measures including:

Air Quality

·         All vehicles should be washed to remove any dusty materials before leaving the construction site.

·         Ensure all vehicles are properly washed to remove mud and debris before leaving the site.

Chemical and Waste Management

·         Good housekeeping should be maintained and stagnant water should be removed from secondary containment regularly.

·         Provide proper chemical and chemical waste management.

·         A spill response procedure shall be in place and absorption material available for minor spillages.

Water Quality

·         Surface run-off, rainwater and waste water from construction site discharged into appropriate drains via adequately designed sand/ silk removal facilities (e.g. sand traps, sile traps and sedimentation basins) and pH adjusted before discharge.

4                 WASTE MANAGEMENT

4.1.1          The Contractor has registered as a chemical waste producer of the Project.  The C&D materials and waste sorting were carried out on-site.  Receptacles were provided for general refuse collection.

4.1.2          During the reporting quarter, a total of 3,4942,573m3 of excavated material has been generated.  1,8821,628m3 of inert C&D materials was disposed of at public fill to Tuen Mun Area 38, while 435m3 471m3 of inert C&D materials was reused on site.  315m3 415m3 of general refuse was disposed of at North East New Territories (NENT) Landfill.  25m3 of plastics and no paper/cardboard packaging were collected by recycling contractor in the reporting quarter.  12m3 of metals were collected by recycling contractor in the reporting quarter.  No0.8m3 of chemical waste wasere collected by licensed contractor in the reporting quarter.  Details of the waste management data are presented in Appendix F.

5                 ENVIRONMENTAL NON-CONFORMANCE

5.1.1          No environmental non-compliance was recorded in the reporting quarter.  No environmental complaint was received.  No environmental related prosecution or notification of summons was received in the reporting quarter.  The summary for the non-compliance, complaints and prosecutions is provided in Appendix G.

6                 CONCLUSION, COMMENTS AND RECOMMENDATIONS

6.1.1          The EM&A programme was carried out by the ET in accordance with the EM&A Manual requirements.  It is concluded from the environmental monitoring and audit works that adequate environmental mitigation measures have been implemented by the civil works contractors where appropriate in the reporting quarter.

6.1.2          In the reporting quarter, one (1)no exceedance events wereas recorded.

6.1.3          No environmental non-compliance was recorded in the reporting quarter.  No environmental complaints were received in the reporting quarter.  No environmental related prosecution or notification of summons was received in the reporting quarter.

6.1.4          The box culvert works have been partially completed by the end of March 2014 except the last construction activity, installation of a base slab at Box Culvert ID4.  Due to the loading requirement of a fresh water main under the box culvert, installation of the base slab at Box Culvert ID4  has been scheduled to be commenced in December 2016.

6.1.5          The construction works at the box culvert ID4 are temporarily suspended until the utilities diversion works complete.  The 4-week post construction water quality monitoring will be commenced after the installation of the base slab finishes, hence the completion of the box culvert works.